Multiple terminal bank



Oct. 10, 1933. J. J. KUHN MULTIPLE TERMINAL BANK Filed Nov. 11, 1931 2 Sheets-Sheet l INVENTOR By J. J. /(UHN 7km A TTORNEV Oct. 10, 1933.

J. J. KUHN MULTIPLE TERMINAL BANK Filed Nov.

2 Sheets-Sheet 2 INVENTOR J KUHN ATTORNEY Oet. t 1,929,925 2 t H MUL TIlfL-E TERMINAL BANK t W John J. Kuhn, Elizabeth,fN. r es-signer to Bell Telephone Laboratories,- Incorporated, New York, N. Y.,- a corporation of New York Application November 11,1931

" Serial N 574,2 79

I i i Claims. (c 173-324) v This invention relates. 'tomultiple terminal; Fig. 2 is a front elevation-showing the face-Iv bank arrangements for wall outlet boxes used plate iparti'ally'cut away; "I f p for connecting a plurality'cf lines or radio chan Fig. 3 is a cross-sectional view taken aDDIoxi nels' toloud speakers in radio program distribumately 0n line 33, of Fig. 2 showing diagram 9 5 tion systemsor the like. Inlsuch a system it: is customaryto provide terminals in'the bank; and r a number of channels or circuits which are mul- Fig. eisa' perspectiveassenibly view of a mill- 1 tipled'in outlet boxes placed inthe rooms of a tiple plug used for connectionwith the terminals; building, the wires terminatingon banks of orin the bank. t g i f f; 10' dinary terminals mounted in the difierent outlet In the drawings 10 indicates anangulafly 65 boxes where they are. permanently attached by shaped mounting; block of insulating material soldered connections. having projections 11 and 12 respectively engag- The testing of the lines in such a system is ing a metallic plate 13 and a'faceplate 14'.- Plate effectedby' interrupting thedeiective circuit as '14 is held in adjusted position on projection12 15 by breaking its. soldered connection as .at the by anumber of screws 15 which engage the 702 middle disposed outlet box, for example, and replate 13, the latter being in turn secured to the. peating this operation including any desired blocklO by afnumber of'screws' 1 6, as shown in number of outlet boxes as the case may be until Figs. 1 and 3, which are also used for securing the defect in that .lineis located. Such terminal insulating plates, 17 and Hand an insulating arrangements, however, have proved to be unspacer member 18 collectively to the opposite "(5.2

satisfactory due to the fact thatthe testing of face of the block 10 through their engagement any one of the radio channels requires the with similarly threaded holes in the bars 20 breaking and resoldering of a'number of conneca and 21,

tions in the outlet boxes in the subscribers prem-' On the plate 17 there is mounted a plurality 5 ises and the consequent loss of time, expense and of right angled terminals 2'2-a and 23 ar- 80 inconvenience. l ranged by pairs. The terminals in each'pair are 7 "The terminal bank of this invention avoids clamped securely to theopposite. sides of this these inconveniences by mounting the terminals plate by a screw 24 which also serves to establish each sidejof anlinsulating mounting Plate n electrical connection between these terminals.

Securing these terminals in Pairs by Screws The free end of terminal 22-11 protrudes through V which also serve to connect the terminals in t plates 7, 19 and t end of t 'm t I each pai electrically- Means-is p o for 23-12 protrudes through the plate'19 in parallel holding the te mi s o each i i adjusted relation with terminal 22-a. The plate 19 is vr at t h other upon t r al of their provided for holding the terminals 23b inad connecting screws for the purpose of testing the justed relation it respect t terminals 22. 9011} lines multipled thereto. A jack is connected to uponthe removal f th -s 24 and temuhalsu one of the terminals of each Pair and extends n 5 22-a are held securely between plate 1'7 and the alcounter-sunk hole in a mounting block. These block 107 through their engagement t t 1 t jacks are engaged by a corresponding number t and t m t 19 as Shown in Figs 1" matically a number of wires connected to the v -of plugs connecting with the loud speaker co the removal of screws 24 being efiective tointer- 3 'In th s a ra g me the Simple removal the rupt the lines multipled to their respectively asscrews which serve to connect the pairs of ter-. sedated terminals for a purpose t will be minals in the'bank interrupts the line multihereinafter d rib d i d tail,

mits testing while avoiding the breaking of the there issecured as by rivet 25 a jack 26 of the soldered connectionsconnecting the wires with. intermeshing spring type which extends in a theterminals in the bank. counter-sunk hole 27 in thefbank 10 in-reg'istry Other advantages of this invention will appear with an opening 28 serving to guide the plugs 29 50 from the following description and by. the claims in a bank 30 shown in Fig. 4 in engagement with appended thereto, reference being had to the jacks 26, these plugs connecting with the loud accompanying drawings in which: speaker's cords 40, a'portion of which is shown Fig, 1 isv a'perspective rear view of the terin Fig. 4. h j

minal bank showing a number of parts with On the plate 13, as shown in Figs. 1 and 2 there I 552Lportions cut away; v 9 is secured as by rivets 41 an angularly formed .,p1ed thereto at these points and thereby per- To the front-portion of each terminal 22-0, f

the wall of a room in a manner similar to that of the so-called outlet box used in connection with lighting fixtures.

In the use of this terminal bank the'testing of the lines or radio channels is effected by I moving one of the screws 24 at any bank through the different rooms of a building for interrupting the defective circuit at that point, noting the operation of the devices remaining connected in the circuit and repeating this operation until the defect in that line is located, thus avoiding the inconvenience of breaking and resoldering the wire connections, and thus saving time while effecting considerable economy in the maintenance cost of. such a system.

What is claimed is:

1. In a terminal bank, an insulating mounting plate, pairs of terminals, the members of each pair beingmounted on, opposite sides of said plate, one terminal of each pair being bent to extend through an aperture in said plate, and a metal detachable fastening member for each pair of terminals passing through said terminals, and serving to secure them to said mounting plate and electrically connecting them together.

2. In a terminal bank, an insulating mounting plate, pairs of terminals, the members of each pair being mounted on opposite sides of said plate, one terminal of each pair being bent to extend through an aperture in said plate in parallel relation to the other terminals in said pairs, a metal detachable fastening member for each pair of terminals passing through said terminals and serving to secure them to said mounting plate and electrically connect them together, and a jack mounted on one terminal of each pair.

3. In a terminal bank, a mounting block, a pair of plates bolted to said block in parallel relation,

pairs of terminals mounted on opposite sides of one of said plates, similar terminals in each pair having portions extending through both plates and the other terminals having portions extending through the other plate, a screw for securing the terminals of each pair to the first mentioned plate and electrically connecting them together, and means for clamping certain of said terminals between said plates and the others between the block and the first mentioned plate.

JOHN J. KUHN. 

